Zeiss humphrey HFA II-i series, Руководство по обслуживанию на месте

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Parts Removal/Replacement Humphrey Field Analyzer II - i
Confidential and Proprietary
Field Service Guide
3 - 18 52235C1105
17) Loosen the M3 screw that secures the right side bracket to the CPU/Backplane
Enclosure.
18) Loosen and disconnect the 1/4 turn fastener from the retainer at the top of the
CPU/Backplane Enclosure.
19) Disconnect the brightness pot cable from the brightness pot assembly.
20) Swing the CPU/Backplane Enclosure out from the chassis just enough to allow access
to the wire saddles on the back of the CPU/Backplane Enclosure.
21) Remove the brightness pot cable from the wire saddle located on the back side of the
CPU/Backplane Enclosure.
22) Remove the patient switch cable from the two wire saddles on the back of the
CPU/Backplane Enclosure and place the cables free of the CPU/Backplane Enclosure.
23) While supporting the weight of the CPU/Backplane Enclosure, loosen and remove the
right side captive screw on the bottom bracket.
Follow-up Checks/Adjustments:
See Table 3-1.
3.7 CPU and Backplane Removal
1) Remove the front cover assembly (3.2).
2) Remove the rear cover assembly (3.3)
3) Remove the CPU/Backplane Enclosure from the Chassis (3.6).
4) Remove the three M3 screws that secure the external CPU PCB clamp to the outside
of the CPU/Backplane Enclosure.
5) Remove the external CPU PCB clamp from the CPU/Backplane Enclosure.
6) Disconnect the two serial port connections from the J9 and J10 connectors on the
CPU PCB.
7) Disconnect the parallel port connection from the J7 connector on the CPU PCB.
8) Disconnect the USB cable connector from the J16 connector of the CPU PCB.
9) Remove the two M3 internal CPU PCB clamp screws.